Go Back

Decadent White Chocolate Mousse Tart Recipe

Learn how to make a luxurious white chocolate mousse tart with a buttery crust—perfect for celebrations and special occasions.
Print Recipe Pin Recipe
Prep Time 30 minutes
Cook Time 25 minutes
Chill Time 4 hours
Total Time 4 hours 35 minutes
Course Dessert
Cuisine American
Servings 8
Calories 320 kcal

Ingredients
  

For the Crust

  • 1 cup all-purpose flour (or gluten-free 1:1 flour blend)
  • 1/4 cup powdered sugar
  • 1/2 cup cinnamon (or nutmeg for variation)
  • 1/4 tsp nutmeg
  • 1/4 tsp salt
  • 1/2 cup cold unsalted butter (or dairy-free margarine)
  • 1 large egg yolk (or flax egg for vegan option)
  • 2-3 tsp cold water

For the Mousse

  • 1 cup heavy cream (or whipped coconut cream for dairy-free)
  • 1/2 cup milk (or almond milk for non-dairy version)
  • 1 tsp gelatin (or agar-agar for plant-based alternative)
  • 8 oz white chocolate (or vegan white chocolate)
  • 1 tsp vanilla extract (or seeds from 1 vanilla bean)

Instructions
 

Step 1: Prepare the Crust

  • In a mixing bowl, combine flour, powdered sugar, cinnamon, nutmeg, and salt.
  • Cut in butter until the mixture resembles coarse crumbs.
  • Add egg yolk and cold water, mixing until dough forms. Chill for at least 30 minutes.

Step 2: Blind Bake the Tart Shell

  • Preheat oven to 350°F (175°C).
  • Roll out dough into a tart pan, prick with a fork.
  • Bake with pie weights for 15 minutes, remove weights, then bake 10 more minutes until golden. Cool completely.

Step 3: Make the White Chocolate Mousse

  • Bloom gelatin in cold water if using.
  • Heat milk gently, dissolve gelatin, then stir in white chocolate and vanilla until smooth. Let cool slightly.
  • Whip cream to soft peaks and gently fold into the chocolate mixture.

Step 4: Assemble the Tart

  • Pour mousse into cooled tart shell, smoothing the top.
  • Refrigerate at least 4 hours or overnight until fully set.

Step 5: Garnish and Serve

  • Decorate with fresh berries, chocolate curls, or a light dusting of cocoa powder.
  • Optional: Serve with whipped cream for extra indulgence.

Notes

  • Vegan/Dairy-Free Options: Replace butter with margarine or coconut oil, heavy cream with whipped coconut cream, milk with almond milk, and white chocolate with vegan white chocolate.
  • Topping Ideas: Fresh berries, chocolate curls, crushed nuts, caramel drizzle, or a sprinkle of citrus zest all elevate the presentation and flavor.